Results 151 to 160 of about 90,744 (294)

All‐Round Talent: Unique Zinc Guanidine Catalyst Performs Efficiently in Synthesis and Chemical Recycling of (Bio)Polyesters

open access: yesAdvanced Science, EarlyView.
A new zinc hybrid guanidine catalyst [Zn{(R,R)TMGNMe2(1,2)ch}2](OTf)2 (C1) shows very high catalytic activity in the polymerization of cyclic esters and in the depolymerization of these polyesters. Using C1 in the ring‐opening polymerization of lactide and caprolactone under industrially relevant conditions, astonishing rate constants of the same order
Tabea Becker   +8 more
wiley   +1 more source

Early hominins from Morocco basal to the Homo sapiens lineage. [PDF]

open access: yesNature
Hublin JJ   +28 more
europepmc   +1 more source

Fossils

open access: yes, 2001
Ilustrado con fotografías y con un texto sencillo invita a los niños a descubrir el mundo de los fósiles como seres vivos que vivieron en otras épocas y que son necesarios para poder realizar el calendario de la Tierra. Incluye un glosario.
Gish, Melissa, Shaw, Nancy J.
openaire   +1 more source

Design of Single‐Atom Catalysts Anchored in N‐Doped Biphenylene Using Symbolic Regression for Electrocatalytic Nitrate Reduction to Ammonia

open access: yesAdvanced Science, EarlyView.
A high‐throughput in silico calculations for NO3RR based on transition metal doped and nitrogen decorated biphenylene network are performed. A symbolic regression is designed to capture the hidden descriptors of NO3RR for hyper dimensional system entailing large geometric variability.
Zheng Shu   +9 more
wiley   +1 more source

Aligned Nanostructures Resolve Zn2+ Transport Bottlenecks via Interfacial Kinetics–Diffusion Coupling in Aqueous Zinc‐Ion Batteries

open access: yesAdvanced Science, EarlyView.
It is revealed that limited solid‐state Zn2⁺ diffusion within the cathode leads to interfacial Zn2⁺ accumulation, forming a transport bottleneck that distorts Zn2⁺ flux directionality. Through advanced analytical techniques, including in situ electrochemical impedance spectroscopy (EIS), distribution of relaxation time (DRT) analysis, and COMSOL ...
Juyeon Han   +4 more
wiley   +1 more source

<i>Prototaxites</i> fossils are structurally and chemically distinct from extinct and extant Fungi. [PDF]

open access: yesSci Adv
Loron CC   +13 more
europepmc   +1 more source

Coupling Nitrogenous Organic Wastewater Treatment and Biorefinery via N‐Cycling Bacterium

open access: yesAdvanced Science, EarlyView.
The vast reservoir of nitrogenous organic pollutants in industrial wastewaters can serve as untapped carbon‐nitrogen resources. This study employs the newly discovered Paracoccus sp. ZQW‐1 as a versatile chassis to simultaneously achieve N‐methylpyrrolidone (NMP) wastewater depuration and polyhydroxybutyrate (PHB) synthesis.
Ziqian Wang   +3 more
wiley   +1 more source

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